Thirty years ago, CAT's 'Alternative Energy Strategy' for the UK showed, for the first time, an alternative approach which could reduce energy demand, and increase generation of renewable energy. Now we have CAT's radical new energy vision, outlining bold policy drivers for reducing our carbon emissions to zero within 20 years. It offers a scenario demonstrating possible outcomes of these policies, using only proven technology. Zerocarbonbritain is scientifically necessary and technically possible and it may even deliver a higher quality of life and a sense of collective purpose not felt in Britain for decades.